The (2013–2017+) RAM 1500, 2500, 3500 - OEM Harness provides an easy and convenient way to connect our cameras to the built-in radio/display in your pickup truck. Avoid the lengthy time it takes to run cabling through your truck, use your truck's built-in wiring system instead. ***Are you a fleet/outfitter? Please call us before purchasing to verify connection. ***Please Note: In order to use this harness you must be replacing an existing OEM camera or have a camera ready vehicle. ***Note: Before installing the camera - make sure the monitor is flashed to read the cameras.